Question
1.) Let's say that an an orange is launched upward at 22m/s. What is the displacement 3.5s later?
2.) When a volcano erupts, big rocks have been measured to reach heights of 50km (50,000m) What would the initial velocity need to be in order to reach such heights (neglect air resistance)?
2.) When a volcano erupts, big rocks have been measured to reach heights of 50km (50,000m) What would the initial velocity need to be in order to reach such heights (neglect air resistance)?
Answers
bobpursley
a. h=vi*time-4.9 t^2
b. initial KE=final PE
1/2 m v^2=mgh
v^2=2*9.8*50,000
solve for v.
b. initial KE=final PE
1/2 m v^2=mgh
v^2=2*9.8*50,000
solve for v.